Lower receiver



FIG. 1 is a left side elevational view of a lower receiver showing my new design;

FIG. 2 is an additional left side elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a sectional view taken along the lines 4—4 in FIG. 3 thereof;

FIG. 5 is a front elevation view thereof;

FIG. 6 is a rear elevational view thereof;

FIG. 7 is a right side elevational view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken line showing of a rifle, in FIG. 1, is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a lower receiver, as shown and described. 